$4ab^3+6ab^3+9ab^3+14ab^3$
$\left(9-y^2\right)^2$
$\frac{33}{-3}$
$\int_{-\pi}^{\pi}\left(z^2\cos\left(2z\right)\right)dz$
$\frac{3}{4}+\frac{-2x-1}{2x\left(x+1\right)}=\frac{3x^2-x-2}{4x^2+4x}$
$7h-3h+2h^2-h+6h$
$\int_7^8\left(\frac{1}{1+x^2}\right)dx$
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